LYF-250X3 Forced oil air cooling device for rectifier transformer

The transformer forced oil circulation air cooler (oil air cooling device) is used as a dedicated cooling device for the forced oil circulation cooling type large transformer. 
The LYF oil-air cooler produced by the company adopts integral rolled finned tube heat exchanger, low noise axial flow fan,transformer special electric oil pump ,transformer oil flow relay and transformer butterfly valve,
which have high heat exchange efficiency and low noise. 

It has the advantages of no oil leakage, convenient operation and reliable operation. The control system components are selected from domestic well-known brands, and can be controlled in conjunction with the transformer. The oil cooler is automatically started and stopped according to the change of the transformer oil temperature, and the oil cooler operation, fault, temperature, oil flow, full stop, etc. are uploaded to the comprehensive control room. Source contact signal. 

4 Designed parameters

4.1 Environmental conditions

4.1.1 Maximum ambient temperature ≤40℃；

4.1.2 Minimum ambient temperature -30℃；

4.1.3 A bove sea level 2000m

Designed parameters  of single cooler

4.2.1 Rated cooling capacity： 250 KW；

4.2.2 Average oil temperature rise ≤ 40 K；

4.2.3 Rate oil temperature rise： 80 T/h；

4.2.4 Rated air inlet temperature ≤35 ℃；

4.2.5 Oil pump power 3.0 KW；

4.2.6 Fan rating 1.1 KW；

4.2.7 Single cooler air volume 32000 M³/h；

4.2.8 Number of single cooler fans 2 pcs；

4.2.9 Distribution power of single cooler: 5.2 KW；

4.2.10 Single oil weight: 180 Kg；

4.2.11 Total weight per unit 1400 Kg